I just bought a Sapphire Radeon HD 6950 2gb and a Rosewill 550W ATX12V / EPS12V Power Supply. When I connect both of the 6 pin PCI-E connectors from the psu to the gpu and try to run the computer, it starts for a second and shuts down. I did the paper clip test and the psu was working fine. I used a wattage calculator online and it seemed that I only needed roughly 500W to run the whole rig and was under the impression that 550W PSU would be ok... should I get a higher wattage psu? I searched the forums and people were suggesting psu from 550W to 850W for the gpu so I am not sure if I am not connecting everything correctly or if I need to buy another psu.
I have:
AMD Phenom II X4 965 3.4ghz
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103727&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=3938566&SID=
ASUS M5A78L-M LX PLUS Micro ATX motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131795&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=3938566&SID=
Rosewill HIVE 550
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182131&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=3938566&SID=
Sapphire Radeon HD 6950 2GB Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102954&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-Video%20Cards-_-Sapphire%20Tech-_-14102954&AID=10440897&PID=3938566&SID=
Thank you for the help!
I have:
AMD Phenom II X4 965 3.4ghz
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103727&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=3938566&SID=
ASUS M5A78L-M LX PLUS Micro ATX motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131795&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=3938566&SID=
Rosewill HIVE 550
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182131&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=3938566&SID=
Sapphire Radeon HD 6950 2GB Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102954&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-Video%20Cards-_-Sapphire%20Tech-_-14102954&AID=10440897&PID=3938566&SID=
Thank you for the help!